alleryThe valve located between the left auricle and the left ventricle has two cusps. By what name is this valve also known?
ATricuspid valve
BBicuspid valve
CAortic semilunar valve
DPulmonary semilunar valve
Answer & Solution
Correct answer: B. Bicuspid valve
1. The valve asked about lies between the left auricle and the left ventricle.
2. This left atrioventricular valve has two cusps.
3. Option A (tricuspid) has three flaps and guards the RIGHT atrioventricular opening, a trap.
4. Option C (aortic semilunar) guards the aorta leaving the left ventricle, not the auricle-ventricle gap.
5. Option D (pulmonary semilunar) guards the pulmonary trunk, again not this opening.
6. The two-cusped valve here is the bicuspid valve, also called the mitral valve.
7. So the answer is option B.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 14 Transportation in Plants and Circulation in Animals "Valves", p.215_
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